Supporting-caging for the composition covering of structural members.



. 0.11. HAYDEN. I SUPPORTING CAGING FOR THE COMPOSITION COVERINGOOFSTRUCTURAL MEMBERS. APPLICATION FILED OCT. 26. [912.

1,201,463; 4 Patented 001.17, 1916.

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D H. HAYDEN. SUPPORTING CAGING FOR THE COMPOSITION COVERING OFSTRUCTURAL MEMBERS.

APPLICATION FILED OCT. 25, I9I2.

1 ,201 ,463. Patented Oct. 17, 1916.

2 SHEETSSI IEET 2.

Int Nnflms PETERS cm. Pmnu-uma. WASNINCYUN. n. c.

DAVID HOMER HAYDEN, OF NEW YORK, N. Y.

SUPPORTING-CAGING FOR THE COMPOSITION COVERING OF STRUCTURAL MEMBERS.

Specification of Letters Patent.

Patented Oct. 1'7, 1916.

Application filed October 26, 1912. Serial No. 728,001.

1 0 all whom it may concern:

Be it known that I, DAVID HOMER HAY- nnx, a citizen of the UnitedStates, and a resident of the city, county, and State of New York, haveinvented certain new and useful Improvements in Supporting-Cagings forthe Composition Covering of Structural Members, of which the followingis a full, clear, and exact description.

The improvement relates to supporting caging or reinforcement for theconcrete and like composition covering of structural members and seeksto provide a simple, inexpensive supporting caging or reinforcementwhich can be readily applied to structural members of different shapesand securely held in position with portions thereof in predeterminedoffset relation to the members.

The invention consists in the features of improvement hereinafter setforth, illustrated in different forms in the accompanying drawings andmore particularly pointed out in the appended claims.

In the drawings, Figure 1 is a perspective view of the lower portion ofan I-beam with one form of the improved reinforcement applied thereto.Fig. 2 is a cross section of the parts shown in Fig. 1. Fig. 3 is aninverted plan view thereof. In Figs. 2 and 3 part of the reinforcementis expanded and a portion is unexpanded to illustrate the manner ofapplying the supporting caging or reinforcement to the beam. Figs. 4, 5and 6 are views similar, respectively, to Figs. 1, 2 and 3, illustratinga modified form of the invention. Fig. 5 is a view similar to Fig. 5,

- illustrating a slight modification. Figs. 7, 8

and 9 are views similar, respectively, to Figs. 1, 2 and 3, illustratinga further modification. Fig. 10 is a cross section of an angle barshowing a form of the invention adapted to be applied thereto. Fig. 11is an elevation of parts shown in Fig. 10 and Fig. 12 is an invertedplan view thereof. Fig. 13'is a cross section of a Z-bar with a form ofthe invention applicable thereto. Fig. 14 is an inverted plan view ofthe parts shown in Fig. 13 with a portion of thereinforcement expandedand a portion unexpanded.

The improved reinforcement comprises a series of connected cross stayswhich are formed of a continuous length of wire bent back and forth uponitself. Portions of the wire from which the cross stays are formed arearranged at right angles to the plane or p ne of the serie of cr ss says and are bent to form attaching elements or hooks. The cross staysthemselves are arranged in different planes and preferably eachalternate cross stay is arranged in one plane and the other cross staysin a different plane. The two planes extend longitudinally of the memberto which the reinforcement or sup.

minedofiset relation with respect to the structural member.

In all forms illustrated, the supporting caging or reinforcement isformed of a continuous length of Wire bent back and forth upon itself toform the cross stays. In the form shown in Figs. 1, 2 and 3, which isparticularly applicable to the reinforcement of the concrete coveringupon the lower face of the horizontal I-beam or similar shape, the

' alternate cross stays 10 are arranged in one plane and the other crossstays 11 are arranged in a different parallel plane offset laterallyfrom the plane of the cross stays 10. The intermediate portions betweenthe cross stays 10 and 11 are arranged in planes substantially at rightangles to the planes of 'the cross stays 10 and 11 and are bent to formattaching elements or hooks 12 and connecting and reinforcing elements13. The attaching hooks extend upwardly and inwardly from the ends ofthe upper or inner cross stays 10, so that, when the reinforcement orsupporting caging is expanded, the cross stays 10 will abut snuglyagainst the face of the I-beam 14: and the attaching elements will hookover and engage the edges and the inner faces of the flanges of theI-beam, as clearly shown in Fig. 2. The connecting and reinforcingelements 13 extend between the ends of the hooks 12 and the ends of thecross stays l1 and are so arranged that when the supporting caging isapplied to the beam, these portions and the cross stays 11 are held inpredetermined offset relation with respect to the beam, so as toproperly support or reinforce the concrete covering therefor. nectingelements 13 are curved and are adapted to extend about the edges of theflanges of the I-beam 14 and in offset relation thereto to properlyreinforce the body of concrete extending about the flanges. In Fig. 1,the body of concrete 15 in which the I-beam 14 and the reinforcement orsupporting caging are embedded, is indicated in dotted lines.

In its collapsed or unexpanded condition, the distance between the innerends of the attaching elements or hooks is such that the reinforcementcan be placed over the base flange of the I-beam, as indicated in Figs.2 and 3. Upon the expansion of the reinforcement, the adjacent crossstays 10 and 11 are drawn apart-so that they extend back and forthinzig-zag fashion over the face of the I-beam, and the attaching elements12 are drawn together to snugly engage and hook over the edges of theflanges of the beam. The complete engagement of the attaching elementswith the flanges of the beam serves to limit the expansion and hold thereinforcement in position on the beam with the cross stays 10 againstthe lower face thereof and the alternate cross stays 11 and reinforcingelements 13 in predetermined oflset relation to properly reinforce theconcrete or composition covering. The engagement of the alternate crossstays 10 with the face of the beam aids in limiting the expansion of thereinforcement and the construction is such that the attaching elementsor hooks cannot be distorted by the force applied in expanding thereinforcement. Inasmuch as the expansion is positively limited, theamount of reinforcement per lineal foot can be accurately predeterminedby properly proportioning the dimensions of the parts of thereinforcement in accordance with the size of the beam to which it is tobe applied.

In the construction shown in Figs. 4, 5 and 6, the alternate cross stays20 and 21 are also arranged in two parallel planes, the cross stays 20being adapted to engage the outer face of the beam 14 and the crossstays 21 are held in offset relation thereto. Upwardly and inwardlyextending hooks or attaching elements 22 similar tothe hooks 12previously described, are formed upon the ends of the inner cross stays20. Portions 23 extend upwardly and outwardly from the ends of the hooks22 and thence downwardly closely adjacent the vertical portions of thehooks and also abut against the edges of the flanges of the beam whenthe reinforcement is expanded. Connecting and reinforcing portions 24extend from the lower ends of the portions 23 outwardly and thencedownwardly to the ends of the cross stays 21. These reinforcing andconnecting elements In this form, the con 24 serve to properly reinforcethe portion of the concrete which extends about the edges of the flangesof the beam. The portions 22 and 23 form, in effect, hooks with doubleshanks which abut against the edges of the beam when the reinforcementis expanded and aid one another in resisting the strain brought upon thereinforcement in effecting its expansion. In the construction shown inFig. 5 the attaching elements or hooks and the ends of the cross stays20 comprise upturned portions 22 which are adapted to extend upwardlyabove the flange of the beam and which are bent inwardly and downwardlyand thence outwardly to form horizontal portions 22 which engage theupper or inner face of the flange. These horizontal portions extendacross and engage the vertical portions 22 and curved connecting andreinforcing portions 24" extend from the horizontal portions 22outwardly and downwardly to the cross stays 21.

In the form shown in Figs. 7, 8 and 9, the alternate cross stays 30 and31 of the series are arranged in two intersecting planes which, when thereinforcement is applied to the beam 14, are inclined at an acute angleto the outer face of the beam. One end of each of the cross stays 30 and31 is provided with a hook 32 and a connecting and rein forcing element33 extends from the end of the hook to the end of the next adjacentcross stay of the series. This reinforcing element, in the form shown,is curved upwardly from the end of the hook and thence outwardly anddownwardly about and in offset relation with respect to the edge of theflange, as shown. In this form, both sets of cross stays, at pointsadjacent the hooks 32, engage the outer faces of the beam 14 when thereinforcement is expanded to aid in limiting the expansion and inholding the reinforcing portions of the caging in proper oflsetrelation.

The form shown in Figs. 10, 11 and 12 is adapted for an angle bar. Thealternate cross stays 40 and 41 of the series are arranged indifferentplanes or are offset in transverse direction and each cross stay is bentat right angles intermediate its ends, so that the cross stays fit overthe outer faces of the angle bar 42 while the cross stays 41 are spacedtherefrom. The cross stays 40 are provided at their ends with attachingelements or hooks 43, which, like those already described are adapted tosnugly engage the edges of the bar or beam upon the expansion of thereinforcement to secure the latter thereto, and curved portions 44connect the hooks to the outer, oflset cross-stays 41.

When the reinforcement is applied to the beam, the portions of the crossstays 40 and 41 opposite one face of the bar or beam extend back andforth in zig-zag fashion or at an angle to one another, as shown in Fig.11, but, preferably,the portions opposite the other face of the anglebar or beam are maintained in parallel relation, as shown in Fig. 12.This parallel relation between these portions of the cross stays ismaintained by providing the outer cross stays 41 with doubled or crimpedportions 45 that project inwardly therefrom and overlap the inner crossstays 40. These crimped or doubled portions 45 maintain the portions ofthe cross stays on one side of the angle bar or beam in parallelrelation as the reinforcement is expanded, and also form spacingelements, since they abut against the face of the angle bar and serve tohold the outer reinforcing cross stays 41 in predetermined offsetrelation.

The form shown in. Figs. 13 and 14 is adapted to be applied to a Z-baror beam 45. In this form, the alternate cross stays 50 and 51 of theseries are arranged in parallel planes which occupy an inclinedposition, as shown, when the reinforcement is applied to the Z-bar. Eachinner cross stay 50 is provided at its ends with horizontally extendingattaching elements 52 and 53, which are adapted to snugly engage theupper and lower horizontal faces of the Z-bar when the reinforcement isexpanded. Preferably, as shown, the attaching elements 52 are providedat their ends with hook like portions 54 which engage the edge of thelower flange of the .Z-bar. Curved connecting portions 55 and 56 extendfrom the ends of the portions 53 and 54 to the ends of the outer crossstays 51 and these connecting and reinforcing portions are provided withdoubled or crimped portions 57 extending inwardly therefrom to formspacing elements. These offset spacing elements overlap the attachingelements 52 and 53 and maintain these portions in parallel relationrespectively to the outer reinforcing portions 55 and 56 when thereinforcement or caging is expanded.

It is obvious that numerous changes may be made in the details set forthwithout the departure from the essentials of the invention as defined inthe claims.

I claim as my invention:

1. The combination with a structural member, of a supporting caging forthe composition covering of said member comprising a length of wire bentback and forth upon itself to form a series of connected cross-stays,the cross-stays of said series being arranged in different planesextending longitudinally of said member and having ofi'set attachingelements hooked over the edges of said member to secure the cagingthereto, said cross-stays having portions engaging the outer faoe of themember to hold other portions thereof in predetermined, offset relation,substantially as described.

2, A supporting caging for the composition covering of structuralmembers comprising a length of wire bent back and forth upon itself toform an expansible series of connected cross stays, the cross-stays ofsaid series being arranged in difierent longitudinally extending planesand having laterally projecting attaching elements, said attachingelements and portions of said cross stays being arranged to hook overthe flanges and engage the outer face respectively of the member uponthe expansion of the caging to hold the other portions of said crossstays in predetermined offset relation relatively to the member,substantially as described.

3. A supporting caging for the composition covering of structuralmembers comprising a length of wire bent back and forth upon itself toform an expansible series of connected cross-stays, the cross-stays ofsaid series being arranged in two different longitudinal planes, andattaching and connecting elements extending between the ends of theadjacent cross-stays of said series, said attaching elements andportions of said cross-stays being arranged to hook over and abutagainst the edges of the structural member to secure the caging thereto,and portions of said cross-stays being arranged to engage the outer faceof said structural member to hold the other portions thereof inpredetermined offset relation, substantially as described.

4. The combination with a structural member, of a supporting caging forthe composition covering of said member comprising a length of wire bentback and forth to form a series of connected cross stays, the crossstays of the series being alternately arranged in two differentlongitudinal planes, said series of cross stays having offset attachingelements securing the caging to the structural member, substantially asdescribed.

5. A supporting caging for the composition covering of structuralmembers comprising a length of wire bent back and forth to form anexpansible series of connected cross stays, the cross stays of saidseries being arranged in two different longitudinal planes and saidcross stays having laterally offset attaching elements, said attachingelements and portions of said cross stays being arranged to respectivelyhook over the edges and engage the outer face of the member upon theexpansion of the caging to secure the latter thereto with other portionsof said, cross stays in predetermined offset relation, substantially asdescribed.

6. A supporting caging for the composition covering of structuralmembers comprising a length of wire bent back and forth upon itself toform an expansible series of connected cross stays, the cross stays ofsaid series being alternately arranged in different longitudinal planes,and attaching hooks and connecting elements extending between the endsof adjacent cross stays of the series, said attaching hooks beingarranged to engage the edges of the member upon the expansion of thecaging to secure the latter thereto.

7. A supporting caging for the composition covering of structuralmembers comprising a length of Wire bent back and forth upon itself toform an expansible series of connected cross stays, the cross stays ofsaid series being alternately arranged in different longitudinallyextending planes, and the intermediate portions between adjacent crossstays of the series being arranged in trans verse planes and bent toform offset attacl1- ing elements arranged to hook over and abut againstthe edges of the member and curved, reinforcing elements arranged toextend about the edges of the member in offset re lation thereto,substantially as described.

8. A supporting caging for the composition covering of structuralmembers comprising a length of Wire bent back and forth upon itself toform a series of connected cross stays, the cross stays of said seriesbeing arranged in two different longitudinally extending, substantiallyparallel planes, the cross stays in one of such planes being arranged toabut against the outer face of the ri' member and having hooks at theirends arranged to engage the edges of the member, and connecting elementsextending between said hooks and the cross stays arranged in the otherof said planes, substantially as described.

9. A supporting caging for the composition covering of structuralmembers comprising a length of Wire bent back and forth upon itself toform an expansible series of connected cross stays, the cross stays ofsaid series being alternately arranged in two 1011- gitudinallyextending, substantially parallel planes, the cross stays arranged inone of such planes being arranged to abut against the outer face of thestructural member and having hooks at their ends arranged to engage theedges of the flanges of the member upon the expansion of the caging tosecure the latter thereto and connecting elements extending between theends of said hooks and the cross stays in the other of such planes,substantially as described.

DAVID HOMER HAYDEN.

7 lVitnesses:

A. BANNELL TAPPEN, BARTON HAXALL COFFEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

